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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-6900K @ 3.20GHz vs Intel Core i7-7800X @ 3.50GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

×Intel Core i7-6900K @ 3.20GHz×Intel Core i7-7800X @ 3.50GHz+ ADD
Price$715 BUY NOW!$424.43 BUY NOW!
Socket TypeFCLGA2011-3FCLGA2066
CPU ClassDesktopDesktop
Clockspeed3.2 GHz3.5 GHz
Turbo SpeedUp to 4.0 GHzUp to 4.0 GHz
# of Physical Cores8 (2 logical cores per physical)6 (2 logical cores per physical)
Max TDP140W140W
Yearly Running Cost$25.55$25.55
First Seen on ChartQ2 2016Q2 2017
# of Samples420396
Cross-Platform Rating024746
Single Thread Rating24422450
CPU Mark1416013639

CPU Mark Rating
As of 4th of April 2020 - Higher results represent better performance
Intel Core i7-6900K @ 3.20GHz
14,160
Intel Core i7-7800X @ 3.50GHz
13,639
CPU Value (CPU Mark / $Price)
As of 4th of April 2020 - Higher results represent better value
Intel Core i7-6900K @ 3.20GHz
19.80
Intel Core i7-7800X @ 3.50GHz
32.13
CPU Single Thread Rating
As of 4th of April 2020 - Higher results represent better performance
Intel Core i7-6900K @ 3.20GHz
2,442
Intel Core i7-7800X @ 3.50GHz
2,450

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Core i7-6900K @ 3.20GHzIntel Core i7-7800X @ 3.50GHz
Max TDP140W140W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.